Transmission device.



J. W. KETTERMAN.

TRANSMISSION DEVIUE.

APPLICATION FILED SEPT.15, 1910.

Patented June 13, 1911.

3 SHEETS-SHEET 1.

R O T w W M c/DHN W. METTEQMAN A TTORNEK WITNESSES:

THE NORRIS PETERS co.. WASHINGTON, 1).?

J. W. KETTBRMAN. IBANSMISSIQN DEVICE. APPLICATION TILED 811M216, 1910.

Patented June 18, 1911.

3 SHEETfl-SHEET 2.

11v via/won Jul-m I4. KETTERMA/Y.

WITNESSEK A TTORNE Y JOHN W. KETTERMAN, 0F MUNCIE' INDIANA.

TRANSMISSION DEVICE.

To all whom it may concern:

Be it known that I, the undersigned, JOHN IV. KETTERMAN, a citizen ofthe United States, residing at Muncie, in the county of Delaware andState of Indiana, have invented certain new and useful Improvements inTransmission Devices, of which the following is a specification.

This invention relates to improvements in friction-transmission devicesof that general type wherein the motion is transmitted from the drivingshaft to the driven shaft by means of a friction-disk driven by theformer and which contacts with the face of the friction wheel carried bythe driven shaft.

Objects of my invention are to provide a new combination and arrangementof parts whereby a more positive and dependable transmission of themotion from the driving shaft may be obtained, and which new device willbe strong and durable, and will be not liable to get out of order orrepair,

and which will be easy to manipulate. These general purposes and othermore speciiic objects which will become apparent as the specification ofmy invention is disclosed, are accomplished by the new con struction,combination and arrangement of parts described in this specification,illustrated in the drawings, and defined in the appended claims.

In the drawings Figure 1 is a side View, and Fig. 2 is a plan View of myimproved transmission device in operative position, there being shown insaid views a sufficient number of parts of the motor-car proper, thatthe function of the several parts of the invention, and the mode ofoperation of same may be clearly understood. Fig. 3 is an enlargedsectional plan view of the invention. Fig. i is a central transversesectional view of Fig. 3 the shaft-block and connected parts being shownin elevation and the end portions of the driven shafts being brokenaway. Fig. 5 is a sectional view taken on the line 55 in Fig. 3. Fig. 6is an enlarged detached side view, and Fig. 7 is an enlarged detachedend view of the shaft-block. Fig. 8 is a central transverse sectionalview taken on the line 88 in Fig. 6. Fig. 9 is a plan view taken on theline 99 in Fig. 7 Fig. 10 is a sectional plan view taken on the line1010 in Fig. 7. Fig. 11 is a detached sectional. View of one of theboxings 7 and its support.

Specification of Letters Patent.

Application filed September 15, 1910.

Patented June 13, 1911.

Serial No. 582,172.

The several parts shown, are indicated by similar characters ofreference throughout the several views.

The rear portion of the continuous driving shaft 1 is carried by journalboxes 2 and 2 suitably supported by the transverse frame members shown.4 and 5 designate opposed friction disks of similar structure anddiameter and which are secured at a proper distance apart on the saiddriving shaft. The inner ends of the shafts 6 and 6 are supported by andjournaled in the sides of the shaft-block. Through the func tionsperformed by the several parts of my invention, these shafts are causedto operate jointly thereby having the same speed and direction ofmovement. This'feature and the structure and function of the said shaftblock and the manner in which the inner ends of the said shafts 6 and 6?are journaled therein will be'hereinafter more specifically described.The outer ends of the shafts 6 and 6" are journaled in the journal boxes7. These journal boxes 7 are supported by the frame in such manner thatthe shafts 6 and 6 will have correct bearing therein when in positionmoved slightly out of true alinement, as well as when they are in truealinement. The detail of construction for the support of these journalboxes 7, is shown in Fig. 11. The member 8 having a ring-portion 8through which vthe journal box 7 may be passed is secured to the machineframe. The rounded ends of the cap screws 9, carried by said member 8,will loosely engagethe recesses 7 in the opposite sides of thejournal-box.

10 and 11 designate friction-wheels. The diameter of these wheels isslightly less than the distance between the faces of the friction-disksso that when the shafts 6 and 6 are being maintained in alinement, therewill be no contact of the friction wheels and the friction disks. Thesefriction wheels are feathered on the shafts 6 and 6 so that they may bemoved longitudinally but not rotatively thereon. The inner end of thehub of each of the friction wheels is provided with an annular groove12, as plainly shown in Figs. 3 and 4t. 7

To sustain the ends of the shafts 6 and 6 and to support the means forvarying the positions of the friction wheels on the said shafts, and forthe moving of the wheels into and out of contact with the frictiondovetail iointure shown. In the central bore 15 is retained a bushing 16of bronze or other suitable metal to form a bearing on the drivingshaft 1. The studs 16 which engage recesses therefor in the body of theshaft block will hold this bushing against longitudinal displacement. Ineach of the sides of this shaft block are circular recesses 1 1". Ineach of said recesses a bearing ring 17 is retained by cap screws 18held by the lock nuts 18*. The rounded ends of these cap screws fit inrecesses in the peripheral faces of the bearing ring whereby the latteris supported pivotally. Suitable ball races 19 constitute bearings inthe said bearing rings, for the inner ends of the shafts 6 and 6 20designates a shift bar having its end pivotally connected to the lowerside of one of the parts of the shaft block, namely the part 1 1*. At apoint near said end of the shift bar is pivotally connected the end ofthe bar 21 which has its other end connected to the lower side of thepart 14. By this arrangement, when either of said parts 14: or 14? areheld, the moving of the shift bar will cause the relative positions ofthe said parts of the shaft block, to be changed, the ends 7 of theshafts 6 and 6 being shifted in opposupported by the shaft block andwhich I will now describe.

27 designates an upright which has its lower end secured in the top ofthe shaft block. A sleeve 28 having a bore of proper diameter is slippeddown over the upright, its lower end resting on the top of the shaftblock. On the threaded lower end of this sleeve a cross arm 29 isscrewed up to engagementwith the shoulder 29; and the lock nut 29 willsecure the cross arm i such position on the sleeve.

30 and 30 designate links which loosely connect the ends of the crossarm to the heads of the yokes 31. These yokes are of the generalconstruction as shown in Fig. 5 and fit loosely in the grooves 12 of thehubs of the friction wheels. An arm 32 has its end secured to the upperportion of the sleeve 28 and its free end is engaged by a handcontrol-lever 33. The upper end of the uprigl'it 27 is sustained inposition by a stay member 3% which has suitable connections with themachine frame.

1V ith the driving disks arranged as shown, and the two friction wheelsarranged be tween them and at a right angle thereto and capable of beingmanipulated into and out of frictional engagement with said disks, it ispossible to obtain through gearing a frictional transmission of thepower to operate the shafts 6 and 6 in either a forward or rearwarddirection. Change of the speed of movement of the shafts is accomplishedby varying the distance between the friction wheels.

lVhen the parts are in the neutral or inoperative position as shown inFig. 2, there is 'a slight clearance betw'eenthe faces of the disks andthe peripheral faces of the friction-wheels. The friction disks are heldagainst undue straining of their connections on the shaft, by thebearings 2 and 2 .Vith the engine operating to turn the disks in thedirection indicated by the arrow in Fig. 1, forward or rearward movementof the car will be obtained by using the foot lever 25 or 26.Manipulation of the foot lever 25 will shift the bar 20 thus moving theshift block which will cause the friction wheel to contact with the disk5. The wheel 10 then acts as a fulcrum and with continued pressureagainst the bar 20 the wheel 11 will be pressed against the disk 4, thusdriving the car forwardly. To obtain a reverse movement of the car theother foot lever being manipulated, the wheel 11 is pressed against thedisk 5, and the wheel 10 against the disk 1. It will be observed that inthis shifting of the bar 20 and the consequent sliding of one part ofthe shift block, on the other, that the shafts'6 and 6 will be movedslightly out of the alinement assumed when in the neutral position. Thebearing'ring's 17, as shown in Fig. 7, and the ournal boxes 7 as shownin Fig. 11, being hung pivotally, are always in true alinement with thejour nals carried therein. The effect at the meeting faces of thefriction wheels and disks andat the sprocket wheels 6 will beinconsiderable. 'This improved transmission device is capable of easyand economical lubrication. The lubricant is introduced at the top ofthe upright'27 and will flow down through the perforation 27 and hole 16lubricating the upper mortise oint and the bearing of the bushing on thedriving shaft; Through the holes 16 the lubricant will flow to the lowermortisejoint; and through the holes 14 the lubricant will flow into thebearings of the shafts 6 and 6*.

By virtue of the positive and direct 1everage obtained by my invention,the forces that press the friction wheels into contact with the disksare balanced and counteracting and a friction of powerful tractive forceand high efliciency is obtained. The device is self contained and ofsimple and rugged construction and will withstand the most severestrains without being deranged or injured:

It is obvious that the desired degree of friction may be maintained bylocking of the foot lever at proper position. The preferred form ofmeans for operating the shift bar 20 is the arrangement of the two footlevers as shown, the rearward as well as the forward movement of theshift bar 20 being obtained by a forward thrust of the opera tors foot;however a connection might be devised whereby a single foot lever wouldbe suflicient, such arrangement however would be not so desirable asthat shown herein. To increase the speed of operation of the drivenshafts the lever 33 is manipulated. The friction wheels are thus movedapart and toward the peripheral portions of the friction disks and maybe held at adjusted positions by locking the hand lever 33.

I am aware that minor changes may be made in the general constructionand detailing of the mechanism for carrying out my invention withoutdeparting from the spirit of my invention or sacrificing any of itsadvantages.

What I claim as my invention, and desire to secure by Letters Patent,is-

1. In a transmission device, the combination of a driving shaft opposeddisks secured thereon, a shaft block carried on the driving shaft andbetween the disks, said shaft block being composed of two parts unitedbut free to be moved slidingly on each other, a pair of driven shaftshaving their inner ends journaled in the two parts of the shaft block, ashift bar having its one end connected loosely to one of the shaft blockparts, a fulcrum bar connected between the shift bar and the other partof the shaft block.

2. In a transmission device, the combination of a driving shaft, opposeddisks secured thereon, a shaft block between the disks composed of twoparts united but free to be moved slidingly on each other, a pair ofdriven shafts having their ends journaled in the two sides of the shaftblock, friction Wheels feathered on said shafts, means to move one partof said shaft block on the other, means carried by the shaft block tovary the distance between the friction wheels, including an uprightcarried by one of the shaft block parts, a cross arm pivoted on saidupright, yokes carried by the hubs of the friction wheels, links betweenthe yokes and the ends of the cross arm, and a lever to move the crossarm.

3. In a transmission device, the combination of a driving shaft, opposeddisks thereon, a shaft block carried on the driving shaft and betweenthe disks, said block being composed of two parts united but free to bemoved slidingly on each other, a pair of driven shafts having theirinner ends journaled in the two parts of the shaft block, frictionwheels feathered on said driven shafts, a shift bar having one endpivotally connected to one of the shaft block parts, a fulcrum barconnected between the shift lever and the other part of the shaft 7Copies of this patent ma; be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, I). 0.

